Hydraulic press.



H. B. REYNOLDS.

HYDRAUEIC PRESS.

APPLICATION FILED FEB. 3 I916.

4 SH ETS-S EET 1.

H. B. REYNOLDS.

HYDRAULIC PRESS.

APPLICATION FILED FEB. 3. I9l6.

Patented Nov. 28, 1916.

4 SHEETS-SHEET 2.

H. B. REYNOLDS.

HYDRAULIC PRESS.

APPLICATION FILED FEB. 3. I916.

Patented Nov. 28, 1916.

4 SHEETSSHEET 3.

II|I.I| I II I IH HI I IH I I I I I I I I I I IH H. B. REYNOLDS.

HYDRAULIC PRESS.

APPLICATION FiLED FEB. a. 1916.

Patented Nov. 28, 1916.

4 SHEETS SHEET 4.

as rand in,

HAROLD BULKELEY REYNOLDS, O RENEREW, SCOTLAND, ASSIGNOR 'IO THE EABCOCKit WILCOX COMPANY, OF BAYONNE, NEW JERSEY, A CORPORATION OF NEW JERSEY.

HYDRAULIC PRESS.

Application filed February 3, 1916; Serial No. 76,066.

To all whom it may concern:

Be it known that I, HAROLD BULKELEY REYNOLDS, a subject of the King ofthe United Kingdom of Great Britain andIreland, and residing at Renfrew,Renfrewshire, Scotland, have invented a certain new and usefulImprovement in Hydraulic Presses, of which the following is aspecification.

This invention relates to improvements in hydraulic presses for forginghollow articles, particularly projectiles and the like,

' and has for its object to provide for more perfect guidance of themandrel coaxially with the die than heretofore accomplished wherebyprojectiles or like articles of uniform thickness may be produced.

The invention is illustrated in the accom panying drawing in which-Figure 1 shows one embodiment in vertical "section; Figs. 2 and 3 arefragmentary views showing collectively vertical sections of amodification and Fig. 4c is a view in section showing a cross-head andslideway hereinafter referred to.

According to the embodiment illustrated in Fig. 1, the improvedhydraulic press comprises a main ram terminating in a mandrel 1constrained to move axially into a hollow die 2 containing the billet 2and carried by a die-holder 2 The mandrel 1 is enveloped by, and isslidable relatively to, a bush 3 which may be of frusto-conical form andis constrained to perform axial movements into and out of engagementwith a counterpart pocket. For imparting the requisite movements to thebush 3 there are provided supplementary hydraulic rams of whichextensions L of the plungers are guided in bushes 5 and secured to amember 6 in which is housed the bush 3.

It will be readily understood that, as the bush 3 is constrained toenter a pocket located immediately: adjacent to'the die 2, the mandrel 1will, in operation, always occupy a position coaxial with the die 2.

To compensate for any tilting movement of the member 6 due tofailure ofthe extensions 4; to move in unison, the bush 3 is formed at 9 with aspherical surface presenting in conjunction with a correspondlnglyformed washer 10 a-universal joint. It follows that tilting movement ofthe member 6 is not communicated to the bush 3.

According to the modification illustrated in Figs; 2 and 3 the mandrel lis disposed horizontally and the bush 3 is adapted to be Specificationof Letters Patent. P t 2%, was,

movedby a single ram 6 which is fitted with a crosshead 7 tracking aslideway 8. In this embodiment the final operation of pressing thebillet is efl'ected by moving the die 2 toward the mandrel l, themandrel 1 being temporarily restrained against retrograde movement by ahydraulically operated snib 13 cooperating with a shoulder on themandrel holder.

What I claim is 1. In a hydraulic press, in combination, abillet-receiving die, a mandrel adapted to enter said die, hydraulicmeans for efi'ecting relative movement of said die and said mandrel, abush sleeving said mandrel, and hydraulic means for moving said bush,substantially as and for the purpose set forth.

2. In a hydraulic press, the combination of a billet-receiving die witha pocket coaxial therewith, a mandrel to enter said die, hydraulic meansfor efiecting relative movement of said mandrel and said die, a bush toenter said pocket and to guide said mandrel, and hydraulic means foroperating said bush, substantially as and for the purpose set forth.

3. In a hydraulic press, the combination of a billet-receiving die witha pocket coaxial therewith, a mandrel to enter said die, a ram foreflecting relative movement of said mandrel, a bush to enter said pocketand to guide said mandrel, hydraulic means for operating said bush, anda universal joint mechanically interposed between said hydraulicmeansand said bush, substantially as and for the purpose set forth.

4. In a hydraulic press, .the combination of a movable billet-receivingdie with a pocket coaxial therewith, a mandrel to enter said die, a bushto enter said pocket and guide said mandrel, hydraulic means for movingsaid mandrel into a position adja cent to said die, hydraulicallyoperated means for temporarily sustaining said man a crosshead on saidram, and a slideway drel in such position and hydraulically optracked bysaid crosshead.

erated means for moving said die into op- In testimony whereof I havesigned my erative relationship with said mandrel, subname to thisspecification in the presence of 5 stantially as described. twosubscribing Witnesses.

5. In a hydraulic press, the combination of a billet-receiving die witha pocket coaxial therewith, a mandrel to enter said die, meansWitnesses: for operating said mandrel, a bush to enter WALLACE C'RANsTONFAIRWEATHER, 10 said pocket, a ram for operating said bush, HENRY MAsoN.

HAROLD BULKELEY REYNOLDS.

